基于Y型顶部结构优化的声屏障降噪设计  

The Design of a Sound Barrier with Optimised Structure of Y-Shaped Top for Noise Reduction

作　　者：王晓楠[1] 张玮晨[1] 戴鹰 应乐惇[1] Wang Xiaonan;Zhang Weichen;Dai Ying;Ying Ledun(Shanghai Academy of Environmental Sciences,Shanghai 200233;Shanghai Environmental Energy Conservation Engineering Co.,Ltd.,Shanghai 200080)

机构地区：[1]上海市环境科学研究院,上海200233 [2]上海环境节能工程股份有限公司,上海200080

出　　处：《上海环境科学》2024年第2期58-60,共3页Shanghai Environmental Sciences

基　　金：上海市交通委2022年度科研计划项目(编号:JT2022-KY-014)资助。

摘　　要：为提升声屏障在城市高架道路上的噪声控制性能,开展了基于Y型顶部结构的声屏障结构设计和性能优化。采用有限元仿真,计算了声屏障所在区域的近场和远场声场分布,对比了折臂型声屏障和Y型声屏障性能。近场声场仿真表明,Y型声屏障相较折臂型声屏障多了朝向道路外侧的折臂,故对距离声屏障较近的底部区域的噪声控制有明显的改善。选取典型的城市高架道路进行高架沿线建筑立面处的声场分布计算,结果表明,加装声屏障对交通道路沿线建筑具有较好的噪声遮挡作用,Y型声屏障可在折臂型声屏障的基础上,进一步将声级降低1~2dB。To improve the noise control performance of sound barrier applied in urban elevated roads,the design and performance optimisation were carried out for the structure of a sound barrier with Y-shaped top.Numerical studies by usingfinite element method were conducted to calculate both the nearfield and farfield sound pressure distribution around the area where the sound barriers installed,and compare the performance between the sound barriers in types of incurved-top edge and Y-shaped top.The near soundfield simulation has shown that the noise control is obviously more efficient in the area not far from the foot of the barrier on account of an additional design with outwards folded top edge to form a Y-shaped structure.By choosing a segment of typical urban elevated road to compute the sound pressure distribution along its façade,it is indicated that the installation of a sound barrier has preferable effect to shield from noise impact on buildings along the line of traffic roads,whilst the sound barrier with Y-shaped top could further lower 1 to 2 dB of the sound level than that with the only incurved-top edge barrier.

关 键 词：高架道路 声屏障 Y型顶部结构 降噪 性能优化 

分 类 号：TB5[理学—物理]